Chrysanthemum Plant Named &#39;Zanmubutter&#39;

ABSTRACT

A  chrysanthemum  plant named ‘Zanmubutter’ characterized by its medium sized blooms with white ray florets and a cream center and prolific branching; natural season flowering date September 22; blooming for a period of 4 weeks.

BOTANICAL DESIGNATION:

Chrysanthemum×morifolium Ramat.

CULTIVAR DENOMINATION

‘Zanmubutter’

RELATED CULTIVARS

This new plant cultivar ‘Zanmubutter’ is of the botanical classification Chrysanthemum×morifolium Ramat.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of chrysanthemum plant, botanically known as Chrysanthemum×morifolium Ramat., commercially known as a garden mum, and hereinafter referred to by the cultivar denomination ‘Zanmubutter’. ‘Zanmubutter’ is a product of a breeding and selection program for outdoor pot mums (garden mums) which had the objective of creating new cultivars with a double type inflorescence, a natural season flowering date around September 15, blooming for a period of 5 weeks.

‘Zanmubutter’ is a seedling resulting from a cross of the female parent 17502 with the male parent 26356. Plants of the new cultivar ‘Zanmubutter’ differ from plants of the parents in ray-floret color. Ray-florets of plants of the seedling are white to cream colored, while those of the female parents are yellow, and those of the male parents are pure white.

The new and distinct cultivar was discovered and selected as a flowering plant by Henricus Cornelius Maria Jacobs on a cultivated field in Rijsenhout, The Netherlands in 2010. The first act of asexual production of ‘Zanmubutter’ was accomplished when vegetative cuttings from the initial selection in 2010 were propagated further in a controlled environment in Rijsenhout, The Netherlands. The new cultivar has been found to retain its distinctive characteristics through successive propagations.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention of a new and distinct variety of chrysanthemum (of about 16 weeks) is shown in the accompanying drawings, the color being as nearly true as possible with color photographs of this type.

FIG. 1 shows a plant of the cultivar in full bloom.

FIG. 2 shows the various stages of bloom of the new cultivar.

FIG. 3 shows the various stages of foliage of the new cultivar.

DESCRIPTION OF THE INVENTION

The observations and measurements were gathered from plants grown out door in Rijsenhout, The Netherlands, under natural day length and temperature and planted in week 25 in 2014, receiving drip irrigation. The natural blooming date of this crop was September 22. The average height of the plants was 40 cm. No growth retardants were used. No tests were done on disease or insect resistance or susceptibility. No tests were done on cold or drought tolerance. This new variety produces medium sized blooms with white ray florets and a cream center blooming for a period of 4 weeks.

From the cultivars known to inventor the most similar existing cultivar in comparison to ‘Zanmubutter’ is ‘Zanmuglow’ (U.S. Plant Pat. No. 22,617). When ‘Zanmuglow’ and ‘Zanmubutter’ are being compared the following difference is noticed: The difference of ‘Zanmuglow’ and ‘Zanmubutter’ are (1) Plant vigour. And (2) Natural season blooming date. (1) Plants of ‘Zanmubutter’ are larger than those of “Zanmuglow’. (2) Plants of ‘Zamubutter’ flower later in the season than those of ‘Zanmuglow’.

The following is a description of the plant and characteristics that distinguish ‘Zanmubutter’ as a new and distinct variety.

The color designations are taken from the plant itself. Accordingly, any discrepancies between the color designations and the colors depicted in the photographs are due to photographic tolerances. The color chart used in this description is: The Royal Horticultural Society Colour Chart, edition 2001.

TABLE 1 Botanical Description of Chrysanthemum × morifolium Ramat. ‘Zanmubutter’ Bud Size: Small; cross-section 4 mm, height 3 mm Shape: Round Texture: Pubescent Outside color: Greyed-green 191A Phyllaries Number: 24, arranged in 3 rows Shape: Elliptic Apex: Acute Base: Truncate Margin: Entire Color: Upper side: Green 143B Lower side: Green 139B Length and width: 3-4 mm; 1.5-2 mm Texture: Pubescent Inflorescences Type: Double Height: 1.5 cm Diameter: 4 cm Peduncle length: 5 cm Peduncle color: Green 138A Peduncle diameter: 2 mm Peduncle texture: Pubescent Number per branch: About. 5-7 inflorescences Duration of flowering: 5 weeks Seeds: Produced in small quantities, ovate, Greyed-brown 199A, length 1.5 mm, diameter 0.5 mm Fragrance: Faint chrysanthemum odor Color inflorescences Center of inflorescence Immature stage: White 155A; (disc florets): Mature stage: Green-Yellow 1B Color of upper side of White 155D ray florets: Color of lower side of White 155D ray florets: Tonality from distance: A garden mum with white blooms and a cream center Color of ray florets after White 155D aging of the plant: Ray florets Texture: Upper and lower side smooth Number: 180-190 Shape: Elliptic Apex: Dentate Base: Attenuate Cross-section: Flat Longitudinal axis: Straight Length of corolla tube: 3 mm Ray floret margin: Entire Ray floret length: 1.2-2 cm Ray floret width: 1-5 mm Ratio length/width: High Disc florets Disc diameter: 4 mm Distribution of disc florets: Few, only visible in mature stage of inflorescence Shape: Funnel shaped Color: Yellow-green 145C at base to Green Yellow 1B at apex Length: 3 mm Diameter: 1 mm Receptacle Color: Yellow-green 145D Shape: Domed raised Height: 3 mm Diameter: 3 mm Reproductive Organs Androecium: Present on only disc florets Stamen length: 3 mm Stamen color: Yellow-green 144A Anther color: Yellow 2A Pollen: Moderate amount Pollen color: Yellow 12A Gynoecium: Present on both ray and disc florets Style color: Yellow-green 154C Style length: 4 mm Stigma color: Yellow 7A Stigma width: 1 mm Ovary: Enclosed in calyx Plant Form: Grown as a spray type pot mum, outdoor raised and mounded Growth habit: Spherical shape Growth rate: Vigorous Height: 40 cm Width: 55-60 cm Stem color: Greyed-brown 199A Stem strength: weak Stem brittleness: brittle Stem anthocyanin coloration: absent Internode length: 1-1.5 cm Length of lateral branch: From top to bottom 20 cm Lateral branch color: Green 138A Lateral branch, attachment: Weak Lateral branch diameter: 2 mm Branching (average number Prolific with 7 breaks after of lateral branches): pinching Natural season blooming September 22 (week 39) date: Foliage Leaf color: Upper side: Green 139A Lower side: Green 139B Color midvein: Upper side: Yellow-green 147D Lower side: Yellow-green 148D Size: Small; length 2.2-5.5 cm, width 1.2-2.7 cm Quantity (number per 22-25 lateral branches): Shape: Elliptic Texture upper side: Sparsely pubescent Texture under side: Pubescent Venation arrangement: Pinnate Shape of margin: Serrated Shape of base of sinus between Rounded lateral lobes: Margin of sinus between Diverging lateral lobes: Shape of base: Attenuate Apex: Mucronulate Petiole length: 0.3-1 cm Petiole diameter: 1-2 mm Petiole color: Yellow-green 147D

TABLE 2 Differences with the comparison variety, when grown under identical conditions “Zanmubutter” ‘Zanmuglow’ Plant height 40 cm 30 cm Plant width 55-60 cm 50 cm Natural season blooming date Week 39 Week 38 

I claim:
 1. A new and distinct chrysanthemum plant named ‘Zanmubutter’ as described and illustrated. 